Home / 19,928.26-29,905.98-12,911.50

Finding the Fourth Proportional to 19,928.26, 29,905.98 and 12,911.50

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Solution

The fourth proportional to 19,928.26, 29,905.98 and 12,911.50 is: 19,376.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,928.26 : 29,905.98 = 12,911.50 : x
  2. Step 2: Convert to fraction form
    19,928.26/29,905.98 = 12,911.50/x
  3. Step 3: Cross multiply
    19,928.26x = 29,905.98 × 12,911.50
  4. Step 4: Simplify right side
    19,928.26x = 386,131,060.77
  5. Step 5: Solve for x
    x = 386,131,060.77/19,928.26
  6. Step 6: Final answer
    x = 19,376.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.